There's a train that leaves Stansted airport at 08:24 and gets to Cambridge at 8:52. I can look up an earlier or later one if you prefer
I just need to arrive by 19:15, so could you find one closer to that time, please?
train-arriveby train-day train-departure
train-arriveby train-day train-departure
train-arriveby train-day train-departure train-destination
train-arriveby train-day train-departure